Westerman, M. D. (1993). The business environmental handbook. The Oasis Press/PSI Research.
芝加哥风格引文Westerman, Martin D. The Business Environmental Handbook. Grants Pass, Oregon: The Oasis Press/PSI Research, 1993.
MLA引文Westerman, Martin D. The Business Environmental Handbook. The Oasis Press/PSI Research, 1993.
警告：这些引文格式不一定是100％准确.